King Congletard

King Congletard is a king who inhabits Zgraxxis. It is unknown if he rules the planet, a part of it, or a certain species of alien. The bravest warriors protected him from the Hardcore Hill Midgets. He has a high-pitched scream.

Trivia:

He has a similar body shape and color to Lumpy Space Princess from Adventure Time

In the episode Ultra Wankershim, King Congletard is in Chris' vision of the future, the vision played backwards has him saying "This is a message playing backwards" twice